Dancing On My Own (Tiesto) Calum Scott Download 'Dancing On My Own (Tiesto)' on iTunes
We've all heard a mobile phone ring in the cinema, but what about during a classical music concert?
Lukáš Kmiť's incredible performance on the vioia is interrupted by a familiar ring tone.
Rather than admit defeat, the Slovakian impressively improvises the melody into his rendition! Watch below.